Rare earth metal methane catalyst and preparation method thereof

Abstract

The invention provides a rare earth metal methane catalyst and a preparation method thereof, and relates to a catalyst and a preparation method thereof. The invention solves the problems that when being used for catalyzing and activating the methane, the existing load type noble metal catalyst has high working temperature and high production cost, and has poor stability and easy volatility and decomposition at high temperature so as to cause the problem that the catalyst is inactivated. The rare earth metal methane catalyst is prepared by palladium nitrate, rare earth metal, dilute nitric acid and a carrier, wherein the rare earth metal is Nd, Pr, Ce, Gd, Tb, Dy, La, Ho or Y; the preparation method comprises the following steps of: (1) mixing the rare earth metal and the palladium nitrateevenly, adding dilute nitric acid and stirring evenly; (2) adding the carrier, soaking, taking out and drying in the shade; and (3) heating, rising temperature, then heating, cooling to room temperature and obtaining the rare earth metal methane catalyst. The rare earth metal methane catalyst has low working reaction temperature, thus avoiding the catalyst from being inactivated; in addition, therare earth metal methane catalyst has the advantages of low cost, simple preparation method, wide application range and the like.

Description

technical field [0001] The invention relates to a catalyst and a preparation method thereof. Background technique [0002] Methane is the most stable hydrocarbon, it is usually difficult to activate or oxidize, and the catalytic activation temperature of methane is high, water vapor will be generated during the reaction process, and natural gas contains a small amount of sulfur, so the methane catalytic combustion catalyst must have high activity And high hydrothermal stability, and certain anti-poisoning ability. Usually, catalyst activity and stability are contradictory. Therefore, the development of efficient and stable low-temperature catalytic activation catalysts for methane has aroused great interest of researchers at home and abroad. [0003] Introducing a catalyst into the methane reaction system can greatly reduce the reaction operating temperature and accelerate the reaction speed. Supported noble metal (including Ru, Rh, Pt, Pd, etc.) catalysts have high activi...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a rare earth metal methane catalyst and preparation method thereof, so that methane can be catalytically activated at a lower temperature, so as to solve the problem of high working temperature (about 350° C.) High cost, poor stability at high temperature, easy volatilization and decomposition, leading to catalyst deactivation, which greatly limits industrialization

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